Migrating D front end to D - post Dconf

[Daniel Murphy]

"Daniel Murphy" <yebblies at nospamgmail.com> wrote in message 
news:km7lir$48g$1 at digitalmars.com...
> "Walter Bright" <newshound2 at digitalmars.com> wrote in message 
> news:km7fml$2rka$1 at digitalmars.com...
>> When devising solutions, I want to prefer solutions that do not rely on 
>> #ifdef/#endif. I've tried to scrub those out of the dmd front end source 
>> code.
>
> I completely agree.  But - refactoring the glue layer interface to use a 
> proper visitor interface (what I suspect is the best solution) is a rather 
> large change and will be much easier _after_ the conversion.
>
> While ifdefs are a pain in general, the big problem is this pattern.
> if (a && b &&
> #if SOMETHING
>    c && d &&
> #else
>    e && f &&
> #endif
>    g && h) {
> ...

It turns out these are actually not that big a problem in the frontend - 
around 30 cases, all DMDV2 or 0/1.

The backend is another story...